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Nucleic Acids Research, 1981, Vol. 9, No. 8 1963-1971
© 1981

MOLECULAR BIOLOGY

Periodicity in DNA primary structure is defined by secondary structure of the coded protein

Victor B. Zhurkin

Institute of Molecular Biology, Academy of Sciences of the USSR 117984 Moscow B-334, Vavilova 32, USSR

Received February 23, 1981. A 10.5-base periodicity found earlier is inherent in both eu- and prokaryotic coding nucleotide sequences. In the case of noncoding eukaryotic sequences no periodicity is found, so the 10.5-base oscillation seemingly does not correlate with the nucleosomal organization of DNA. It is shown that the DNA fragments, coding the {propto}-helical protein segments, manifest the pronounced 10.5-base periodicity, while those regions of DNA which code the ß-structure have a 6-base oscillation. The repeating pattern of nucleotide sequences can be used for comparison of the DNA segments with low degree of homology.


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M. Y. Tolstorukov, K. M. Virnik, S. Adhya, and V. B. Zhurkin
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